Replace Deprecated BeginImageContextWithOptions with UIGraphicsImageRenderer

[jfversluis]

Description of Change

In iOS 17 the UIGraphics.BeginImageContextWithOptions API is deprecated and we're using that in a couple of places. This change replaces those with the new thing that we should be using.

Issues Fixed

Related xamarin/Xamarin.Forms#15833 & xamarin/Xamarin.Forms#15827

[jfversluis]

Converting to draft, the Essentials Screenshot API doesn't work yet

[rmarinho]

Hum I was going to swear I did this already somewhere

[jfversluis]

This causes some tests to be flaky, not sure how or why...

[dturrina]

Any news with this? It's some months iOS 17 is out, I'm having the issue for a new implementation but I need to know if something is going to happen at a certain time... or I'll just have to take another way

[vhugogarcia]

Thanks @jfversluis for creating this draft-PR. I also started to face issues on iOS 17.4

024-03-15 10:31:55.496 DemoApp[1221:47820]  Assertion failure in void _UIGraphicsBeginImageContextWithOptions(CGSize, BOOL, CGFloat, BOOL)(), UIGraphics.m:410
 Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UIGraphicsBeginImageContext() failed to allocate CGBitampContext: size={0, 820}, scale=2.000000, bitmapInfo=0x2002. Use UIGraphicsImageRenderer to avoid this assert.'

The crash of the app occurs when entering the background on iOS. I tried to merge main to this branch, however, I don't have permissions, so I can test the latest changes. Can somebody give me a hand, please?

[jfversluis]

@vhugogarcia rebased! Is this something you're looking into as well? I'd gladly take some help!

[vhugogarcia]

Hello @jfversluis , I am also looking for an update on this, since I am also facing the issue on my apps. I'm not expert on this topic, I'm totally new. I will try to see what I can do to help to solve the failed tests, maybe we need to update them somehow. Just a guess, hehehe!

[jfversluis]

Oh yeah don't worry was just wondering! 😄 maybe you knew something about it!

[its-jefe]

Ah man this is so close! I can't find this discussed anywhere else really so I'll just rabble here 😁
This would be significant for iPads running iOS 17 from what I have seen.
App still crashing every time it gets backgrounded.

[jeff-eats-pubsubs]

👀

[InquisitorJax]

@jfversluis any word on getting this in?
We're experiencing a crash on iOS when taking photos - tracked down the cause to UIImageExtensions.NormalizeOrientation when doing a File.OpenReadAsync()

... this is causing some serious issues in production. Is there any way to work around this?

[jfversluis]

This one got stale and I think some calls already got replaced, moving the rest to this updated one: #28682